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umbilical cord

(Encyclopedia)umbilical cord ŭmbĭlˈĭkəl [key], cordlike structure about 22 in. (56 cm) long in the pregnant human female, extending from the abdominal wall of the fetus to the placenta. Its chief function is t...

vinegar

(Encyclopedia)vinegar, sour liquid consisting mainly of acetic acid and water, produced by the action of bacteria on dilute solutions of ethyl alcohol derived from previous yeast fermentation. The coloring and flav...

vortex

(Encyclopedia)vortex vôrˈtĕks [key], mass of fluid in whirling or rotary motion. To simplify the analysis, vortex motion usually describes motions in a frictionless fluid. In such cases the absence of friction w...

Bent's Fort

(Encyclopedia)Bent's Fort, trading post of the American West, on the Arkansas River in present-day SE Colorado, E of Rocky Ford and La Junta and several miles above the mouth of the Purgatoire. The trading company ...

workers' compensation

(Encyclopedia)workers' compensation, payment by employers for some part of the cost of injuries, or in some cases of occupational diseases, received by employees in the course of their work. The degree of responsib...

tarantula

(Encyclopedia)tarantula tərănˈchələ [key], name applied chiefly to species of the large, hairy spiders of the family Theraphosidae of North and South America, Africa, S and SE Asia, and Australia. The body of ...

Teapot Dome

(Encyclopedia)Teapot Dome, in U.S. history, oil reserve scandal that began during the administration of President Harding. In 1921, by executive order of the President, control of naval oil reserves at Teapot Dome,...

sword

(Encyclopedia)sword, weapon of offense and defense in personal combat, consisting of a blade with a sharp point and one or two cutting edges, set in a hilt with a handle protected by a metal case or cross guard. Th...

Tenure of Office Act

(Encyclopedia)Tenure of Office Act, in U.S. history, measure passed on Mar. 2, 1867, by Congress over the veto of President Andrew Johnson; it forbade the President to remove any federal officeholder appointed by a...

bookbinding

(Encyclopedia)bookbinding. The art and business of bookbinding began with the protection of parchment manuscripts with boards. Papyrus had originally been produced in rolls, but sheets of parchment came to be folde...